公开(公告)号：US20200285154A1

公开(公告)日：2020-09-10

申请号：US16879961

申请日：2020-05-21

Applicant: ASML NETHERLANDS B.V

Inventor： Gijs KRAMER ,  Martijn HOUBEN ,  Nicholas Peter WATERSON ,  Thibault Simon Mathieu LAURENT ,  Yuri Johannes Gabriël VAN DE VIJVER ,  Marcus Martinus Petrus Adrianus VERMEULEN ,  Simon Karel RAVENSBERGEN ,  Vincentius Fransiscus CLOOSTERMAN ,  Siegfried Alexander TROMP ,  Coen Hubertus Matheus Matheus BALTIS ,  Justin Johannes Hermanus GERRITZEN ,  Niek Jacobus Johannes ROSET

IPC: G03F7/20

Abstract: An extraction body for a support apparatus of a lithographic apparatus. The support apparatus is configured to support an object. The extraction body is formed with an opening at a surface thereof. The opening extends within the extraction body forming a first passageway. The first passageway is configured to fluidly communicate an extraction channel in the extraction body to liquid between the surface and the object. A first pressure in the extraction channel is less than ambient pressure. At least a part of the first passageway is sized and dimensioned such that when the liquid enters the first passageway via the opening, a second pressure in the first passageway associated with surface tension of the liquid is lower than the first pressure such that at least a portion of the liquid is retained in the first passageway.

公开(公告)号：US20180107107A1

公开(公告)日：2018-04-19

申请号：US15567279

申请日：2016-03-22

Applicant: ASML NETHERLANDS B.V.

Inventor： Gijs KRAMER ,  Simon Karel RAVENSBERGEN ,  Niek Jacobus Johannes ROSET ,  Pieter Renaat Maria HENNUS

IPC: G03B27/42 ,  G03F7/20

CPC classification number: G03B27/42 ,  G03F7/70341 ,  G03F7/70716

Abstract: A support apparatus for a lithographic apparatus has an object holder and an extraction body radially outward of the object holder, The object holder is configured to support an object. The extraction body includes an extraction opening configured to extract fluid from a top surface of the support apparatus. The extraction body is spaced from the object holder such that the extraction body is substantially decoupled from the object holder. The extraction body includes a projection configured such that it surrounds the object holder and such that, in use, a layer of immersion liquid is retained on the projection and in contact with an object supported on the object holder,